LTC4368HDD-2#PBF, Board Mount Surge Protectors 100V UV/OV & Reverse Prot Cntr w/ Bi-dir

LTC®4368 is a 100V UV/OV and reverse protection controller with bidirectional circuit breaker. LTC®4368 protects applications from power supply voltages that may be too high, too low, or even negative and from overcurrent faults in both forward and reverse directions. The LTC4368 controls the gate voltage of a pair of external N-channel MOSFETs to ensure that the load is connected to the input supply only when there are no voltage or current faults. Two comparator inputs allow configuration of the overvoltage (OV) and undervoltage (UV) set points using an external resistive divider. A current sense resistor sets the forward and reverse circuit breaker current thresholds. After a forward current fault, the LTC4368 will either latch off power, or retry after a user adjustable delay. After a reverse current fault, the LTC4368 waits for the output to fall 100mV below the input to reconnect power to the load.

• Wide operating voltage range from 2.5V to 60V
• Overvoltage protection to 100V
• Reverse supply protection to -40V
• Bidirectional electronic circuit breaker: +50mV forward sense threshold, -3mV reverse
• Adjustable ±1.5% undervoltage and overvoltage thresholds
• Low operating current: 80µA, low shutdown current: 5µA
• Controls back-to-back N-channel MOSFETs
• Hot swappable supply input
• Pin-selectable overcurrent auto-retry timer or latch off
• 10-lead (3mm × 3mm) plastic DFN package